Question

Mass of one atom of an element is 6.645×10-23 g.How many moles of element are there in 0.320 kg
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Answer 1

Answer:

Mass of one atom of an element is 6.645×10-23 g.How many moles of element are there in 0.320 kg

Answer 2

Answer:

= 4.8156 x 10-24 moles.

Explanation:

Mass of one atom of an element = 6.645 × 10-23 g = Atomic mass.

Mass of given element = 0.320 kg

Number of moles = Mass/ Atomic mass

= (0.320 x 1000)g / (6.645 x 10-23)g

= (320 x 1023) / 6.645 = 48.156 x 1023

= 4.8156 x 1024 moles.

= 48.156 x 10-23

= 4.8156 x 10-24 moles.